#region " LICENSE "
// DRILL - Dependency Resolution Interface Layer Library
// Copyright (c) 2008-2012 Wade A. Reynolds. All rights reserved.
// http://drill.codeplex.com/
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#endregion
using System;
using System.IO;
using Drill.Configuration;
using Drill.Core.Utilities;

namespace Drill.TestSupport
{
    public class TestConfigFileLoader
    {
        private const string UnityProviderTestConfigFilename = @"UnityProvider\AppConfig.config";
		private const string DefaultTestConfigFilename = @"TestConfigFiles\Minimal.config";
		private const string DependencyResolverName = "Default";

        private readonly string _testConfigFilename;

        private TestConfigFileLoader(string testConfigFilename)
        {
            ArgumentException argumentException =
                ValidationUtility.GetArgumentExceptionForStringIsNullOrIsEmptyOrContainsOnlyWhitespace(testConfigFilename, "testConfigFilename");
            if (null != argumentException)
            {
                throw argumentException;
            }

            if (Path.IsPathRooted(testConfigFilename))
            {
                _testConfigFilename = testConfigFilename;
            }
            else
            {
                string testDataDirectory = TestDataDirectoryLocator.FindTestDataDirectory();
                _testConfigFilename = Path.Combine(testDataDirectory, testConfigFilename);
            }
        }

        private IDependencyResolverConfiguration LoadTestConfig()
        {
			return ConfigurationLoader.LoadDependencyResolverConfig(DependencyResolverName, _testConfigFilename);
        }

        public static string GetDefaultTestConfigurationFilename()
        {
            return new TestConfigFileLoader(DefaultTestConfigFilename)._testConfigFilename;
        }

        public static string GetUnityProviderTestConfigurationFilename()
        {
            return new TestConfigFileLoader(UnityProviderTestConfigFilename)._testConfigFilename;
        }

        public static IDependencyResolverConfiguration LoadDefaultTestConfig()
        {
            return new TestConfigFileLoader(DefaultTestConfigFilename).LoadTestConfig();
        }

        public static IDependencyResolverConfiguration LoadUnityProviderTestConfig()
        {
            return new TestConfigFileLoader(UnityProviderTestConfigFilename).LoadTestConfig();
        }
    }
}